Intrusion into Japanese security firm's development environment raises customer data concerns
A Japanese security services provider detected suspected third-party access to its development administration environment after an employee's GitHub credentials were compromised. It is investigating whether some customers' company names, names, email addresses and service communications information may have been viewed or obtained. The company said it would respond across the organisation to prevent a recurrence and restore trust.
Key facts
- Affected organisation
- Being confirmed
- Incident type
- Data breach
- Occurred / detected
- Not confirmed
- Scale of damage
- Possible exposure of some customers' company names, names, email addresses and service communications information
- Cause / method
- Access to the development administration environment through compromised employee GitHub credentials
- Location
- Japan
If your data was exposed
Exposed dataNameEmail
- Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organisation’s official website or app.
Timeline
- Suspected access following the compromise of an employee's GitHub credentials and the possibility of customer data exposure were reported.
- Further reports followed on the risk of customer data exposure.
Also affected by this incident
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Read on 日テレNEWS NNN ↗Shinagawa childcare programme exposes 195 email addresses in subcontractor breach
↳ Knock-on damage from another organisation’s incident · View original incident195Impact: 195 email addresses leaked
Users' email addresses were leaked following unauthorised access, confirmed on 28 October 2026, at arara, the email delivery subcontractor for School Mail, which is used by Shinagawa City's morning childcare programme. The city said that, as of 5 pm on 10 November, 195 email addresses had been exposed, affecting users who registered with or logged in to School Mail between 30 June and 28 October. Only email addresses were leaked, and there was no unauthorised access to School Mail itself.
Read on www.city.shinagawa.tokyo.jp ↗Toyo University confirms alumni and parents’ email addresses leaked in external email service breach
↳ Knock-on damage from another organisation’s incident · View original incidentToyo University announced on 11 November 2026 that email addresses belonging to alumni, guardians of current students and others had been leaked following a breach of the external email delivery service Arara Message. The leak resulted from unauthorised access to the service between 28 and 31 October and affected email addresses receiving the August newsletter for guardians and the October newsletter for alumni. Only email addresses were registered with the service, and the number leaked was not disclosed.
Read on 東洋大学 ↗Kyoto City KYOCERA Museum of Art emails potentially exposed in ARTPASS contractor breach
↳ Knock-on damage from another organisation’s incident · View original incidentOn 4 November 2026, the City of Kyoto received a report from the operator of ARTPASS, the ticketing service for the Kyoto City KYOCERA Museum of Art, that email addresses may have been leaked. This followed unauthorised access to the systems of Arara, to which the operator had outsourced email delivery, and the extent of the impact involving the museum was not disclosed. No leak of information managed by the City of Kyoto or compromise of city systems had been confirmed, and the city said it was investigating the scope of the impact while urging caution over malicious emails.
Read on ScanNetSecurity ↗
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The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.